In this lab, we gained a basic understanding of generating and measuring time-varying signals. Before the actual lab began, we predicted values of voltage over time assuming the two resistors were equal.
Since both resistors are assumed to be equal, the voltage drop across each resistor should simply be half the input voltage.
Simple setup consisting of 2 resistors in series.
Sine wave input (A = 2V)
Sine wave output (A = 1V)
Square wave input (A = 2V)
Square wave output (A = 1V)
Triangle wave input (A = 2V)
Triangle wave output (A = 1V)
Lab 10: Superposition II
In this lab, we analyzed, built, and tested a circuit containing multiple sources. For the pre-lab, we first analyzed the circuit using source transformations in conjunction with superposition in order to predict the voltage across the 6.8k resistor.
After predicting a voltage drop of 2.702 V across the resistor, we built the circuit shown below:
We measured the true resistance of each resistor, as well and we calculated the theoretical voltage across the 6.8 k resistor from the 5 V source individually, as well as from the 3 V source individually:
Through doing calculations, the expected individual contribution of the 5 V supply was 1.99 V, and the expected individual contribution of the 3 V supply was 0.702 V.
In testing the circuit, we found the individual contribution of the 5 V supply to be 1.989 V across the 6.8 k resistor.
The individual contribution of the 3 V supply was found to be 0.701 V
The voltage across the 6.8 k resistor from both the 5 V and 3 V supplies was measured to be 2.691 V, very close to our calculated value from earlier. This is simply the sum of the contributions from each power supply.
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